Unincorporated Giles County, Tennessee has no countywide zoning, but covered residential construction still needs a state residential building permit, which the Giles County Clerk processes123. Inside Ardmore, Elkton, Minor Hill, Lynnville and Pulaski, city codes apply instead4. Septic permits come from TDEC, not the county or the cities5.
At a glance
- Building permit
- Required for covered residential construction in unincorporated areas2
- Building code
- State residential program applies to covered homes and townhouses6
- County zoning
- No countywide zoning; cities regulate property inside city limits1
- Septic
- TDEC permit required before installation or repair7
- Owner-builder
- Allowed for an owner-use residence under state conditions8
- RV or tiny-home living
- Countywide occupancy rules could not be confirmed; ask the County Clerk and TDEC910
- Floodplain
- County floodplain rules apply in FEMA-identified floodplains11
Who to call
Building permits
Processes Tennessee residential building permits and answers local building-permit questions
222 W. Madison Street – Pulaski, TN 38478
Planning & zoning
Giles County Regional Planning Commission
Subdivision standards, development questions and county floodplain information
222 W. Madison Street, Pulaski, TN 38478
Septic permits
TDEC Columbia Environmental Field Office
Division of Water Resources contact for septic-related services in Giles County
1421 Hampshire Pike, Suite 100, Columbia, TN 38401
Roads & driveways
Giles County Highway Department
County road and bridge questions; ask about access from a county-maintained road
400 Bennett Drive, Pulaski, TN 38478
Contact details are copied from each office’s official page and were checked against it on October 10, 2026.
Off-grid gear
Going off-grid in Giles County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Giles County, Tennessee?
Yes. A state residential building permit is required for covered residential construction in unincorporated Giles County.2 The program covers one- and two-family dwellings and townhouses and uses the state residential and energy codes.6 Detached garages, sheds, barns and other detached structures not used for living purposes do not require the state residential permit.12 A manufactured or modular home itself does not require that residential permit, but custom exit work such as a deck, patio or stoop does.12
The building permit does not replace septic, electrical, floodplain, grading, sewer or other approvals that may apply to the site.2 State-permitted work receives foundation, framing or rough-in, and final inspections, with plumbing and mechanical inspection included under the stated conditions.13 Permit fees vary with the cost of construction, and the Giles County Clerk says the cost depends on expected construction cost and type of foundation; new construction also carries a $100 plumbing and HVAC inspection fee14. An owner may build a single residence for their own use without a contractor license once every 24 months, as long as it is not for resale, lease or rent8.
Who handles Giles County building permits and inspections?
The Giles County Clerk processes Tennessee building permits and is the local permit counter for questions about a residential project.3 A permit may also be purchased through Tennessee's CORE system, and inspections are requested through that system.12 State-contracted inspectors perform the required inspections for work under the state program.13
Before applying, tell the Clerk whether the parcel is unincorporated or inside Ardmore, Elkton, Minor Hill, Lynnville or Pulaski, because property inside those cities follows city codes and regulations rather than county land controls.1 The county's Regional Planning Commission is the contact for subdivision standards, development questions and floodplain information in unincorporated Giles County.15 If the land must be subdivided, Giles County Subdivision Standards apply.15
Does Giles County, Tennessee have zoning?
Giles County has no countywide zoning, and unincorporated areas are not subject to county zoning regulations.1 That does not make a parcel regulation-free: deed restrictions and applicable state and federal requirements can still control a project.15 Incorporated-city property follows that city's codes and regulations.1
The absence of countywide zoning does not remove the state residential building-permit requirement, septic approval or the county's floodplain rules.2711 Giles County enforces floodplain-development regulations in FEMA-identified floodplains.11 Because the county has no zoning, it sets no zoning minimum dwelling size, lot size, lot coverage or building height in unincorporated areas, though building-code, septic, floodplain, subdivision and deed-restriction rules still apply.16171819 Where a tract is subdivided under the Giles County Subdivision Standards, residential setback lines are 35 feet at the front and 10 feet at the side; the standards do not reach tracts of five acres or larger that need no new roads, easements or utilities.2021
How do septic permits work in Giles County?
TDEC, not the county or a city, requires a Septic System Construction Permit before a subsurface sewage system is installed or an existing faulty system is repaired, and it is separate from the state residential building permit.5 The fee for a new conventional system is $400 for a design flow up to 1000 gallons per day.7 The TDEC Columbia Environmental Field Office serves Giles County and can route septic-service questions through its Division of Water Resources staff.22 A permitted installation receives a final inspection before the system is covered, and TDEC issues a Certificate of Completion after approval.23
Only 15.4% of mapped Giles County soils lack severe limitations for a conventional septic drain field, so make septic feasibility an early purchase contingency rather than assuming a house site will work.24 TDEC may require soil information, and larger conventional or alternative systems require an engineer's design under the state process.7 A qualifying utility may instead require a building on an abutting parcel to connect to an available sanitary sewer, but no countywide Giles County connection rule was confirmed.25
Can you live in an RV or tiny home in Giles County?
Giles County's lack of countywide zoning does not by itself confirm that full-time RV living or every tiny-home setup is legal on an unincorporated parcel.1 We could not confirm a countywide RV-occupancy rule, tiny-home minimum size or off-grid sanitation rule, so ask the County Clerk about the structure and TDEC about the proposed wastewater method before buying.322
A tiny home built as a dwelling can fall within the state residential permit program, while detached structures not used for living purposes are outside the state residential permit requirement.12 Manufactured and modular homes generally do not require the state residential permit for the unit itself, although custom site work used to exit the home does require a permit.12 Property inside an incorporated city is governed by that city's codes and regulations, so the county answer cannot be carried into city limits.1
How do you build a home in Giles County?
- Confirm whether the parcel is unincorporated or inside a city; city property follows city codes, while unincorporated property has no countywide zoning.1
- Ask the Regional Planning Commission whether subdivision standards or FEMA-identified floodplain rules affect the tract.1511
- Have TDEC evaluate the wastewater plan and obtain the septic construction permit before installation or repair.7
- Purchase the state residential building permit through the Giles County Clerk or Tennessee's online system.312
- Arrange the required foundation, framing or rough-in, and final inspections before covering work.13
- If a driveway connects to state highway right-of-way, obtain the required TDOT highway entrance permit; ask the Giles County Highway Department about access from a county road.2627
- Confirm final septic approval and ask the County Clerk whether any separate occupancy documentation applies to the project.233
What should you check before buying land in Giles County?
Start with wastewater and terrain. Only 15.4% of mapped soils lack severe limitations for a conventional septic drain field, while 57.7% of county land has a slope of 15% or less.2428 Ask TDEC about septic feasibility for the exact homesite before the inspection period ends.22
Check the FEMA flood map and ask the Regional Planning Commission whether the proposed development lies in the county's regulated floodplain area.11 Confirm legal road access separately; a driveway on state highway right-of-way needs a TDOT permit, while county-road questions go to the Highway Department.2627 Review the deed for private restrictions because the absence of countywide zoning does not remove them.15 Finally, verify water and sewer availability with the serving utility, since we could not confirm a countywide connection rule for unincorporated Giles County.25
Watch-outs
- No countywide zoning does not mean no permits: covered residential construction still needs the Tennessee state permit, and septic approval is separate.27
- A parcel inside Ardmore, Elkton, Minor Hill, Lynnville or Pulaski follows city codes and regulations, not the county's unincorporated-area zoning answer.1
- Only 15.4% of mapped soils lack severe limitations for a conventional septic drain field, so verify a workable wastewater site before closing.24
- Giles County's general residential certificate-of-occupancy requirement could not be confirmed; ask the County Clerk what final documentation applies to the specific project.3
Sources
- Giles County Regional Planning Commission, quoted and re-checked
- Apply for a Residential Permit, quoted and re-checked
- Giles County Clerk (gilescountytn.gov)
- Giles County Regional Planning Commission, quoted and re-checked
- Subsurface Sewage Disposal System (SSDS) Permits, quoted and re-checked
- Residential Permits, quoted and re-checked
- Septic System Construction Permit (Tennessee statewide rule), quoted and re-checked
- tn.gov, quoted and re-checked
- Giles County Regional Planning Commission (2026 county census)
- TDEC - Subsurface Sewage Disposal Systems (SSDS) (2026 county census)
- Giles County Regional Planning Commission, quoted and re-checked
- Residential Permits (Tennessee statewide rule), quoted and re-checked
- Residential Permits, quoted and re-checked
- Giles County Court Clerk, quoted and re-checked
- Giles County Regional Planning Commission (gilescountytn.gov)
- Giles County Regional Planning Commission, quoted and re-checked
- Giles County Regional Planning Commission, quoted and re-checked
- Giles County Regional Planning Commission, quoted and re-checked
- Giles County Regional Planning Commission, quoted and re-checked
- Subdivision Standards of Giles County, TN, quoted and re-checked
- Subdivision Standards of Giles County, TN, quoted and re-checked
- TDEC Columbia Environmental Field Office (tn.gov)
- tn.gov, quoted and re-checked
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- Utility Customers Frequently Asked Questions (Tennessee statewide rule), quoted and re-checked
- Highway Entrance Permits (Tennessee statewide rule), quoted and re-checked
- Giles County Highway Department (gilescountytn.gov)
- Share of land at 15% slope or less: Bolthole Index county data
Written October 10, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.